import { constantRoutes } from '@/router'
import Layout from '@/layout'
import { getMenuListApi } from '@/api/user'
/**
 * Use meta.role to determine if the current user has permission
 * @param roles
 * @param route
 */
function hasPermission(roles, route) {
    if (route.meta && route.meta.roles) {
        return roles.some(role => route.meta.roles.includes(role))
    } else {
        return true
    }
}

/**
 * Filter asynchronous routing tables by recursion
 * @param routes asyncRoutes
 * @param roles
 */

// export function filterAsyncRoutes(routes, roles) {
//   const res = []

//   routes.forEach(route => {
//     const tmp = { ...route }
//     if (hasPermission(roles, tmp)) {
//       if (tmp.children) {
//         tmp.children = filterAsyncRoutes(tmp.children, roles)
//       }
//       res.push(tmp)
//     }
//   })

//   return res
// }

export function filterAsyncRoutes(routes, roles) {
    const res = []
    routes.forEach(route => {
        const tmp = {...route }
        if (hasPermission(roles, tmp)) {
            const component = tmp.component;
            if (component) {
                if (component == 'Layout') {
                    tmp.component = Layout;
                } else {
                    tmp.component = (resolve) => require([`@/views${component}`], resolve)
                }
            }
            if (tmp.children) {
                tmp.children = filterAsyncRoutes(tmp.children, roles)
            }
            res.push(tmp)
        }
    })

    return res
}


const state = {
    routes: [],
    addRoutes: []
}

const mutations = {
    SET_ROUTES: (state, routes) => {
        state.addRoutes = routes
        state.routes = constantRoutes.concat(routes)
    }
}

const actions = {
    generateRoutes({ commit }, roles) {
        return new Promise(resolve => {
            //accessedRoutes对接后端接口之后，返回的菜单数据
            getMenuListApi().then(res => {
                console.log('获取菜单')
                console.log(res)
                let accessedRoutes = filterAsyncRoutes(res.data, roles)
                console.log("=======================获取菜单============================");
                console.log(accessedRoutes)
                console.log("===============================================");
                commit('SET_ROUTES', accessedRoutes)
                resolve(accessedRoutes)
            })
        })
    }
}

export default {
    namespaced: true,
    state,
    mutations,
    actions
}